I'm looking at the Crockett 5 disc frameset but I already have a nearly new set of wheels to go on it. The downside to kids bikes is that with kids needing different crank lengths, handlebars, shorter stems, and my preferring the microshift for them it gets cheaper to buy a decent frameset or a used bike. But, even without the wheelset, an AdventX group, bmx crank, and basic wheels from any one of several online shops as well as the trim out parts and tires from Merlin cycles will have a bike as light for the same price as the specialized if you can do the work.